Oceanic phytoplankton are a potentially important source of benzenoids to the remote marine atmosphere
| Autor: | Stacy Deppeler, Aurélie Colomb, Maija Peltola, Karl A. Safi, Andrew Marriner, Karine Sellegri, Cliff S. Law, Neill Barr, Jonathan Williams, Erin Dunne, James Harnwell, Alexia Saint-Macary, Manon Rocco |
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| Přispěvatelé: | Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), CSIRO Marine and Atmospheric Research [Aspendale], Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), National Institute of Water and Atmospheric Research [Wellington] (NIWA), Max Planck Institute for Chemistry (MPIC), Max-Planck-Gesellschaft, University of Otago [Dunedin, Nouvelle-Zélande] |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
01 natural sciences Ethylbenzene Mesocosm Atmosphere 03 medical and health sciences chemistry.chemical_compound Phytoplankton GE1-350 14. Life underwater Benzene 030304 developmental biology 0105 earth and related environmental sciences General Environmental Science 0303 health sciences QE1-996.5 fungi Geology Environmental sciences chemistry 13. Climate action [SDU]Sciences of the Universe [physics] Atmospheric chemistry Environmental chemistry [SDE]Environmental Sciences General Earth and Planetary Sciences Environmental science Dimethyl sulfide Seawater |
| Zdroj: | Communications Earth & Environment, Vol 2, Iss 1, Pp 1-8 (2021) Communications Earth & Environment Communications Earth & Environment, Springer Nature, 2021, 2 (1), ⟨10.1038/s43247-021-00253-0⟩ Communications Earth & Environment, 2021, 2 (1), ⟨10.1038/s43247-021-00253-0⟩ |
| ISSN: | 2662-4435 |
| Popis: | Benzene, toluene, ethylbenzene and xylenes can contribute to hydroxyl reactivity and secondary aerosol formation in the atmosphere. These aromatic hydrocarbons are typically classified as anthropogenic air pollutants, but there is growing evidence of biogenic sources, such as emissions from plants and phytoplankton. Here we use a series of shipborne measurements of the remote marine atmosphere, seawater mesocosm incubation experiments and phytoplankton laboratory cultures to investigate potential marine biogenic sources of these compounds in the oceanic atmosphere. Laboratory culture experiments confirmed marine phytoplankton are a source of benzene, toluene, ethylbenzene, xylenes and in mesocosm experiments their sea-air fluxes varied between seawater samples containing differing phytoplankton communities. These fluxes were of a similar magnitude or greater than the fluxes of dimethyl sulfide, which is considered to be the key reactive organic species in the marine atmosphere. Benzene, toluene, ethylbenzene, xylenes fluxes were observed to increase under elevated headspace ozone concentration in the mesocosm incubation experiments, indicating that phytoplankton produce these compounds in response to oxidative stress. Our findings suggest that biogenic sources of these gases may be sufficiently strong to influence atmospheric chemistry in some remote ocean regions. A group of aromatic hydrocarbons in the remote marine atmosphere, typically classified as anthropogenic pollutants, are attributable to local biogenic sources, according to shipborne observations and mesocosm experiments. |
| Databáze: | OpenAIRE |
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